Pick-stick check



J. A. ANDREWS AND J. W. HERBERT.

P|CK STICK CHECK. APPLICATION FILED NOV. 10, 1920.

1,394,265. Patented Oct. 18, 1921.

2 SHEETSSHEET'I.

amen tow A. ANDREWS AND .I. W. HERBERT.

PICK STICK CHECK. APPLICATION FILED NOV. 10, 1920.

1,394,265. Patented Oct. 18, 1921.

2 SHEETS-SHEET 2.

Tlfiifi;

5 (Jwuewtoz UNITED STATES PATENT OFFICE.

JAMES AUGUSTUS ANDREWS AND JOHN WILLIAM HERBERT, OF BIDDEFORI), MAINE.

PICK-STICK CHECK.

Specification of Letters Patent.

Patented Oct. 18, 1921.

Application filed November 10, 1920. Serial No. 423,669.

To all to 720m it may concern:

Be it known that we, JAMES A. ANDREWS and JOHN W. HERBERT, citizens of the United States, residing at Biddeford, in the county of York and State of Maine, have invented new and useful Improvements in a Pick-Stick Qheck, of which the following is a specification.

This invention relates to certain new and useful improvements in a pick stick check, and it has for its objects to simplify and cheapen the manufacture of such devices; to provide an improved form of casting or body portion with which cooperates a spring pressed cam whose active face is serrated for firmer engagement with the check strap and arresting cam which is reversibly mounted whereby it may be made to function for straps moving in either direction; and a spring having reversible engagement with the body.

The invention further has for its object to provide improved means for obtaining a variation in the tension of the spring whereby to increase or decrease the cam pressure on the check strap.

Other objects will appear as the description progresses, and those features of construction and the arrangements and combinations of parts on which protection is desired described in detail and succinctly defined in the appended claims, references being' had to the accompanying drawings wherein- Figure 1 is a side elevation of the improved pick stick check;

Fig. 2 is a bottom plan view thereof;

Fig. 3 is a view, in side elevation, of the opposite side of the check disclosing the improvements forming the subject matter of the present invention; and

Fig. 4 is a vertical section transversely through Fig. 1 on line 4-4 thereof, further disclosing the invention.

In the present disclosure, the lay 1 has the usual pick stick 2 movable therein and checked in its oscillatory movements by means of the endless cheek strap 3, which, on one side, is supported and guided by means of a pair of guide fingers 4 depending from the bracket 5 that is secured to the side of the lay, and a third finger 6 adjustably supported by the bracket 5 and arranged between the fingers 4 to engage the opposite face of the strap, said third finger having, its

lower end outturned to provide a supportmggledge 7 across which the strap slides.

olted, or otherwise secured, to the opposite s de of the lay is the improved structure forming and constituting the subject matter of the present invention, the same including a U-sectioned casting or body portion 8 suspended on its side by an upward bracket extension 9 through which the securing bolt 10 1s passed. The cam 11 is mounted on the bolt 12 between the upper and lower sides of the body casting for swinging its active face 13, which is formed with teeth or serrations as indicated in Fig. 2, into and out of engagement with the strap 3. Between the cars 14 of the cam, through which the bolt 12 is passed for pivotally mounting the same,,1s arranged a spring 15 coiled about the pivot bolt and having one end extending laterally over a lever arm extension 16 of the cam and engaging in the kerf or seat 17 across the head of screw 18, said screw being threaded in said lever arm extension. It is obvious then, that by threading the screw into or out of the arm extension the spring seat is lowered or raised and the tension on the spring correspondingly decreased or increased. The opposite terminal of the spring is formed with an eye 19 which is adapted to be engaged over any one of the four anchor posts 20 formed integral with the body casting on opposite sides of the pivotbolt. Thus the spring terminal 19 may be bent to either side to engage either the upper or lower post 20 forwardly of the cam.

The structure is formed to set flat against the side of the shuttle box or lay instead of at an angle as in a former construction. The teeth on the cam act more positively on the check strap; the cam is readily reversed to present retrograde movement of the strap in either direction; and the body casing or belt guide is economically constructed, the post being cast integrally with the body. More or less tension can be brought to act on the cam merely by lifting the spring terminal from its seat on the screw, adjusting the latter and then reengaging the spring in its seat.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is 1. In a pick stick check, a check strap, a guide lllfilflfOr, a reversible pivoted W ried by the guide, an upper and a lower pair of spring anchors, a spring connected to the cam pivot for tensioning the latter, an eye on one end of the spring engaged with any one of the anchors of the pairs thereof, and a screw adjustably connected to the cam, the

other end of the spring being formed to enguide therefor, a reversible pivoted cam car ried by the guide, an upperand a lower pair of spring anchors, a spring connected to the cam pivot for tensioning the latter, an eye on one end of the spring engaged with any one of the anchors of the pairs thereof, and means to adjustably support the opposite end of the spring from the cam to permit of the regulation of the spring tension.

3. In a pick stick check, a check strap, a guide therefor, a pivoted cam carried by the guide, a spring for tensioning the cam, and a screw carried by the cam and having a slotted head, the spring having an end formed to be removably received in the slot of the screw head and the screw being adjustable so that :upon removal of the spring end the screw may be adjusted to thereby regulate the tension of the spring.

a. In a pick stick check, a check strap, a guide therefor, a pivot pin carried by the guide, a cam mounted on the pivot pin and being reversible, a spring coiled about the pivot pin and engaged at one end with the cam and having an eye on its opposite end, and a pair of members on the guide located on opposite sides of the pivot pin and each formed for selective engagement with the sprin eye.

5. n a plck stick check, a check strap, a

guide therefor, a cam carried by the guide, a

pivot for the cam, a coil spring on the' p'ivot engaged at one end with the guide and adjustable means borne by the cam and upon which the opposite end of the spring rests and is supported.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

J AMES AUGUSTUS ANDREWS. JOHN WILLIAM HER-BERT. Witnesses:

MABELLE SMITH, ADA SEAVEY. 

